Machine Shop

Question 1

What is the formula for spindle rpm

Answer 1

3.82 x cutting speed / diameter of work

Question 2

What is UNC

Answer 2

Unified National Coarse

Question 3

What is UNF

Answer 3

Unified National Fine

Question 4

What is UNEF

Answer 4

Unified National Extra Fine

Question 5

What are the three types of tooth set blades

Answer 5

raker, wavy, alternate

Question 6

One of the most important factors in successful band sawing is a

Answer 6

proper cutting speed

Question 7

What are some advantages using a circular saw

Answer 7

burr free mill finish, cuts of extreme accuracy

Question 8

what do you call a multisided tool to which a number of different cutting tools are attached

Answer 8

turret

Question 9

what is the process for final finishing to close dimensions

Answer 9

grinding

Question 10

where there is a high degree of precision and surface finish and surface finish is needed

Answer 10

lapping

Question 11

T or F drilling machines is much broader in meaning and includes all types of machines designed for drilling

Answer 11

True

Question 12

What are the 3 parts of a drill press

Answer 12

Head, spindle, table, base

Question 13

What is the purpose of a center punch

Answer 13

center punch is used to make an indentation for the drill point at the center to aid the drill in getting started

Question 14

What are the main parts of the twist drill

Answer 14

shank, body, point

Question 15

what are twist drills made of

Answer 15

carbon steel, high speed steel

Question 16

Normal purpose angle of a twist drill is

Answer 16

118 degrees

Question 17

T or F
High speeds and light feeds are recommended for automatic drilling machines where holes don’t exceed four drill diameters in depth

Answer 17

T

Question 18

a tool that makes a taper or bevel the end of a hole is a

Answer 18

countersink

Question 19

what is a drill drift

Answer 19

removes twist drills sleeves and sockets from drill press spindle

Question 20

used to raise work above the drill press table to not damage vise or table

Answer 20

parallels

Question 21

manufacturers use this term to designate maximum diameter of the work can be machined

Answer 21

swing

Question 22

T or F
Carriage assembly is the entire unit that moves lengthwise along the ways between headstock and tailstock

Answer 22

True

Question 23

T or F
Feed is distance that a tool advances work during half revolution

Answer 23

False (one revolution)

Question 24

what tool is used to machines the ends of the work and to machine shoulders

Answer 24

facing tool

Question 25

In straight turning between centers cutting edge of the tool should be set

Answer 25

5 degrees above center

Question 26

T or F The distance from a point on a screw thread to a corresponding point on a adjacent thread measured parallel to the axis is called pitch

Answer 26

True

Question 27

T or F For right hand threads the carriage must travel toward the headstock

Answer 27

True

Question 28

what does the steady rest support

Answer 28

long stock

Question 29

many injuries caused to the hand by

Answer 29

bind and twist

Question 30

What are the three high production machines

Answer 30

turret lathes, multi tool, and multi spindle

Question 31

what tool removes alot of metal

Answer 31

rough cut tool

Question 32

what attachment is widely used method of machining tapers

Answer 32

taper attachment

Question 33

turret lathes are classified as

Answer 33

vertical or horizontal

Question 34

knee and column mill is classified as

Answer 34

horizontal or vertical

Question 35

T or F knee and column milling machine used more frequently in tool and die shops

Answer 35

True

Question 36

machines depends on being kept clean to improve

Answer 36

accuracy and durability

Question 37

various methods of mounting work on the milling machine for machining are

Answer 37

table, chuck, arbor

Question 38

why is it bad to have dull cutters

Answer 38

dull cutters wears more rapidly, does not last as long

Question 39

what are the two types of grinding

Answer 39

precision and non precision

Question 40

T or F Surface grinders are used for grinding precision parts

Answer 40

True

Question 41

What does CNC stand for

Answer 41

Computer Numerical Control